Boiler



4 shawls-sheet 1 Girl wouah v 3 Willis J .la

Jan. 31, 1933.

W. J. MA AGIRL BOILER Filed NOV. 2S, 193C w. J. MA GIRL 1,895,720

BOILER Filed Nov. 2s, 1930A 4. sheets-sheet 4 Jan. 31, 1933.

ln/verge@ VVZIZZI'S Jjlfa Girl forming the boiler and its enclosure thatthey t Y on the lines IV Patented Jan. 31, 1933 UNITED STATES wILLIs J,MA GIRL, or BLooMINGToN, ILLINOIS, A'ssIerNoIzV `:|10 3P. H. MAGIItLroUN-DRY AND IURNAGE Womzs, or BLooMINGToN,ILLINoIs, A FIRMcoMI'osED oIpJAIIEps n. MA GIRL, IDA DALToN, AND Geminiani: .JOHNSTON ni BOILB 5 Application mea November zafisio. 4sefiai'No.' manta Thisinvention pertains to boilers and more particularly to those employedprimarily for domestic purposes wherein gas or oilis employed as thefuel. The construction is such that the boiler may be used in connectionwith water, steam or vapor heating systems.

The main obj ect of the invention is to provide means, in a boiler ofthe water tube type, whereby the water is caused to circulate in suchpaths that no cross currents will be set up thus insuring a rapidcirculation throughout the boiler.

A further object is to provide a sectional and light structure whichfacilitates ease of handling and the ready passage of the parts througha usual doorway.

A still further oblect 1s to provide a structure which affords readyaccessibility to the tub whereby they may be removed and replaced with aminimum of trouble.

Another object resides in so Shaping and are of unit form whereby two ormore units may be readily assembled and connected so as to produce astructure'which may be of the desired and necessary capacity. y

i With these and other objects and advanf tages, which will hereinafterappear in view, reference is made to the annexed drawings wherein- 1Figure l is a perspective view of the boiler with the upper casingremoved;

Figure 2, a vertical sectional view on the,

"une II-II of Figure a;

Figure 3,l a similar view on `the line III-III of Figure 2;

Figures 4 and 5, transverse sectionalviews IV and V--V respectively ofFigure 2; and

Figure 6, a like view on the line VI--VI of Figure 3. l

In the drawings 1, 2, 3 and 4 denote rectangular metallic sectionssecured together at their adjacentedges to produce the square'v base ofthe boiler. The sections are each pro-V vided at their lower edge with afoot flange 5 and at their upper edge with an inwardly extending flange6 the upper face whereof Vat its inner edge is countersunk (see Figures2 *I4`urthermoregA each of said'sec'tions is provided with yinternallyextending.,cros`s ribs, `as 7 which, Awhen :the sections Vare"assembled, form in effect continuous ribsb'etween which refractoryblocks 81 are" placed, "forming a fire box; v Nlithin saidrbox'imaybeplaced* a suitablel burner,` oil or* gas as desired', 1 the opening forthe'feed pipe `of which may exvtend through any of Vthe base sections. s

v @ne of said sections, asa', will yhave a door orlreniovable section 9associated therewith to affordaccess to-the burner. t-

v-Surmounting theiiregboxor base and restj-A ing upon` the inwardly:extending flange 6 at two upwardly extending `Vwater legs l1 and `12whichl are connected at their upper ends by suitable nipples 13 and 114respectively with The upperfahd' lower headers 10`jand v15 are alsoconnected bya series of' coils '16 and 17, the ends of one set of coils,both' at the upperand lower' portions thereof, "being puposeKNwld-',icil will presently".

Vones'ide thereof is a 'base header `10`l`1avii1g Ythe upper headerdenoted generally'by l5. f

' slightly shorter than those ofA thev other coils," i

so fthat'they may lenter or be'connec'ted to`-thev A lower water boxorheader 10 at -therear and front thereofl and'likewisejout of commonvertical plane atthe upper end'wherethey communicate'withfthe upperheader 15.1

vp-The header 15a provided wif-,ha ademe-x shapedmember 18 atitsfupplerside 'and an` off-take pipe 19"is"connectedfwith the upper portionthereof, 'V Y *A return' pipe header 10.

' As will be 'best 'seen upon l,reference to Fig'- ure V,3,the water`passes fromV the header 10 throughthevarious coils 16 and '17'andupfwardly into theuppe'r chamber` or header'l, thence'f'outwardlythrough thelpipe 19 land back tothe pipe 20.1"" In case the ,boileriis'used as a steam generator thefwater level "will be maintained somewhatYabovefthe'outlets ofV the jupper end ofthefcoils-"and the water willthen flow. fromfsaid upper ends laterally toV the connections '13=and`l4 .and vdown the water legs 11 and :12 to the lower header 10.,00-

In this' way itwill be seen that there is sub- 20 opens into `the ylowerV 1f Y Y n 1,895,720Y

stantially no interference with the flow of the water by setting upcrosscurrents as vfre- '.quently occurs in manyv boiler constructions.Products of Vcombustion pass upwardly f 5 froml the chamberin which thecoils are located through iues2l and 22 which pass up'- wardlythroughtheheader 15 and discharge into a chamber 23 .from which thereextends the ordinaryofftake flue orichim'ney pipe 24'. .The upper'header,15" is supported. upon that side opposite the Water legs-11 and 12 f byposts or columns *25" and 26 (Figure .4) which are securedto the` headerand to the furnace base in any suitable manner. fThe lower header, thewater legs, land the upper header' are enclosed Within ametallicicasin27madefup in sectional'form and provide.` upon its-'innery surfacevwith. alayer of insulating material 28.- This enclosure, whichis `2Q@shearing hambeaisprovided with@ door,

as-29, (Fig-ure2) to afford access to the coils so thatE they mayberemoved. and. replaced should occasion 'require..

, TheV boiler will,.of course,vb/e provided with suitable. gauges,vbothsteam `and water level, y so that itmay be used eitherfas'a steam'boilerproper or as a-water heating boiler.' ,y Various units may be assembled,side by sidejand with this in View the* lower. header v0 10isprovidedwithopenings normallyclosed by. screw plugsBO. andl, eitherone of which may be removed when sections are placed ald-V jacentthereto andsuitable nipples employed to. bring about connection of.onelowerhol'd-y er with another. So too the upper. headerl Vmayw haveYanopening formed therein normally closed by ascrew plug `32j N Y l lWhatis clalmedisa.

Inl a-boiler, the. combination'of a. base.;

40 a heatingy chamber mounted thereon a head- 'er extending along onesidezonly'l of the-base y Within said chamber, saidheader having., alwaterleg extending upwardly from each end Y ofsaid header; an upperheader connected to i i 45 andeincommunicationwith the watjenlegs,`

said uppergheader being of such" dimensions. as to substantiallyequal-the transverse Vdimensions ofthe heating chamber and. clos.- l ingthe .upper portionthereof and: said ,head1 59' er being provided with atleast one flueexV tending therethrough for the .passage of combustiongases, there being agvented chamber formed above the upper header forithe reception otthe'combustiongase's; a pair. of

.55 posts .extendingupwardly -from the baseto the side of thel upperheader oppositethewater. legs andforming with saidlegslthesuppor-t rfor,said .upperheader; and al series.. of coils Within saidv heating.chamber. connecting 60' theheaders.. Y `Y name toi this.speci-ficationq/j. L y y MALGrIRL.vv

